Miniaturized Breath-based Sensor for the Detection of Hypo- and Hyperglycemia
Miniaturized Smart Sensor Device for the Detection of Hypo- and Hyperglycemic Events in Persons Diagnosed With Diabetes
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Mangilal Agarwal, PhD
- Telefonnummer: 317-278-9792
- E-mail: agarwal@iu.edu
Undersøgelse Kontakt Backup
- Navn: Akanksha Tipparti, M.S.
- Telefonnummer: 317-626-9725
- E-mail: atippart@iu.edu
Studiesteder
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Indiana
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Indianapolis, Indiana, Forenede Stater, 46231
- Rekruttering
- Jameson Camp
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Ledende efterforsker:
- Linda DiMeglio, MD
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Kontakt:
- Joe Esten
- Telefonnummer: 608-390-6398
- E-mail: JEsten@diabetes.org
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Who are diagnosed with T1D or T2D.
- Who are between 7-25 years of age.
- That use a Dexcom (G6 or G7) CGM device.
- That have an established working CGM for at least 12 hours.
- That are willing to share their CGM data for the study duration.
- That are willing and able to fill up a breath collection bag.
- That are attending a diabetes camp in the state of Indiana.
Exclusion Criteria:
- That are smokers or who live with someone who smokes in their vicinity (including prior to attending camp).
- That have a condition or abnormality other than T1D/T2D that in the opinion of the Investigators would compromise the safety of the subject or the quality of the data.
- That have symptoms or recently been diagnosed with an upper respiratory illness including COVID-19 (or other viral/bacterial infections).
- That follow a "ketogenic diet".
- That are unable or unwilling to cooperate with either of the sample collection modes.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Diabetic Children Attending a Summer Youth Camp with Continuous Glucose Monitors
Participants diagnosed with type 1 diabetes (T1D) or type 2 diabetes (T2D) will be recruited for the study.
Following consent, enrolled subjects will donate breath samples for approximately one week over the course of the summer camp.
Each subject will donate two breath samples during at least n = 15 breath collection events (n = 30 samples in total) for analysis by sensors and gas chromatography-mass spectrometry (GC-MS), while also collecting finger stick data right before (or after) each breath sample.
The participant will also wear a CGM as a routine standard care procedure for diabetes management.
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Children diagnosed with diabetes that wear a continuous glucose monitor (CGM) will provide breath samples into the miniaturized sensing device (as well as Tedlar bags for GC-MS analysis) during euglycemia, hypoglycemia, and hyperglycemia.
The breath data will be analyzed to draw correlations with blood glucose levels measured via CGMs and finger prick tests.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Sensor Features Correlate with Blood Glucose Measurements
Tidsramme: 1 week for the summer camp.
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Detection of exhaled VOC concentrations via the miniaturized laboratory device that correlate with hyper- and hypoglycemic episodes determined through finger stick and CGM data.
It is anticipated that the device will be capable of noninvasively estimating blood glucose levels with approximately 30% agreement relative to CGM measurements, while accurately identifying hypo- and hyperglycemic events with greater than 85-90% sensitivity/specificity.
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1 week for the summer camp.
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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GC-MS Analysis of VOCs Correlate with Blood Glucose and Sensor Data
Tidsramme: 1 week for the summer camp.
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Specific VOCs identified through GC-MS analysis are expected to correlate not only with blood glucose levels and hypo-/hyperglycemic events, but also with extracted features of the sensor response.
It is anticipated that select VOCs will exhibit statistically significant correlations (R > 0.70) with glycemic measures and may demonstrate stronger associations with blood glucose levels and glycemic state classification compared to the metal oxide gas sensor array.
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1 week for the summer camp.
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Linda DiMeglio, MD, Indiana University
- Ledende efterforsker: Mark Woollam, PhD, Indiana University
Publikationer og nyttige links
Generelle publikationer
- Siegel AP, Daneshkhah A, Hardin DS, Shrestha S, Varahramyan K, Agarwal M. Analyzing breath samples of hypoglycemic events in type 1 diabetes patients: towards developing an alternative to diabetes alert dogs. J Breath Res. 2017 Jun 1;11(2):026007. doi: 10.1088/1752-7163/aa6ac6.
- Woollam M, Angarita-Rivera P, Siegel AP, Kalra V, Kapoor R, Agarwal M. Exhaled VOCs can discriminate subjects with COVID-19 from healthy controls. J Breath Res. 2022 May 6;16(3). doi: 10.1088/1752-7163/ac696a.
- Daneshkhah A, Shrestha S, Siegel A, Varahramyan K, Agarwal M. Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol. Sensors (Basel). 2017 Mar 15;17(3):595. doi: 10.3390/s17030595.
- Woollam M, Christensen A, Schulz E, Eckerle S, Davis MD, Sanders DB, Agarwal M. Systematic comparison of methods for offline breath sampling. Anal Bioanal Chem. 2025 Sep;417(22):5061-5076. doi: 10.1007/s00216-025-06025-5. Epub 2025 Aug 5.
- Heranjal S, Maciel M, Kamalapally SNR, Ramrakhiani I, Schulz E, Cao S, Liu X, Relich RF, Wek R, Woollam M, Agarwal M. Establishing Healthy Breath Baselines With Tin Oxide Sensors: Fundamental Building Blocks for Noninvasive Health Monitoring. Mil Med. 2024 Aug 19;189(Suppl 3):221-229. doi: 10.1093/milmed/usae078.
- Woollam M, Angarita-Rivera P, Thakur S, Daneshkhah A, Siegel AP, Hardin DS, Agarwal M. Steps toward clinical validation of exhaled volatile organic compound biomarkers for hypoglycemia in persons with type 1 diabetes. Sci Rep. 2025 May 25;15(1):18257. doi: 10.1038/s41598-025-00284-z.
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 31571
Plan for individuelle deltagerdata (IPD)
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IPD-planbeskrivelse
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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